BHOPAL : The traffic police will check vehicles at several squares and tri-sections on December 31 night. Police pickets would be deployed at Lalghati Chowraha, Retghat Tiraaha, Nadra Bus Stand Chowraha, Bharat Talkies Chowraha, JK Road, Board Office Chowraha, RRL Tiraha, Aura Malla, Bagsewania police station and Kolar Tiraha.